Show that the points (5, –1, 1), (7, – 4, 7), (1 – 6, 10) and (–1, – 3, 4) are the vertices of a rhombus.
The rhombus is a quadrilateral in an Euclidean plane having four sides of equal length.
This can also be called as a Parallelogram since we know that the opposite sides of a Parallelogram are equal.